Invista North America S.a.r.l.

Victrex Manufacturing Limited

Michael David Benstead

Adam Chaplin

Erin Bryce

Michael Lewis Turner

A method of making a polyamide copolymer includes subjecting a reaction mixture to conditions sufficient to form the polyamide copolymer, the reaction mixture including adduct A and adduct B. Adduct A is a 1:1 adduct of a diamine having the structure H2N-R1-NH2, or a salt thereof and an aliphatic diacid having the structure HO&#x2014;C(O)&#x2014;R2-C(O)&#x2014;OH, or a salt thereof. Adduct B is a 1:1 adduct of the diamine having the structure H2N-R1-NH2, or a salt thereof, and an aromatic diacid having the structure HO&#x2014;C(O)&#x2014;R3-C(O)&#x2014;OH, or a salt thereof. At each occurrence, R1 and R2 can be independently a substituted or unsubstituted (C1-C20)alkylene. At each occurrence, R3 can be independently a substituted or unsubstituted (C6-C20)arylene. The molar ratio of adduct A to adduct B in the reaction mixture can be about 61:39 to about 90:10.

Polyamide copolymer and method of making the same

Polyaryletherketones are produced which are end-capped with a phenylethynyl-containing moiety. The end-capped material, having a relatively low molecular weight, may be subjected to a thermal cycle to produce a higher molecular weight material having excellent mechanical properties, a relatively high level of crystallinity and acceptable Tm and Tg

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Stockton-on-Tees, United Kingdom

Michael David Benstead